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Win32.HLLW.Siggen.10401

Added to the Dr.Web virus database: 2018-04-16

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • <LS_APPDATA>\Start\update_backup.exe
  • <LS_APPDATA>\Start\RCX5.tmp
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Modifies file system:
Creates the following files:
  • %TEMP%\HbkX.resources
  • %TEMP%\vbc3.tmp
  • %TEMP%\pnva37sd.out
  • %TEMP%\pnva37sd.cmdline
  • %TEMP%\pnva37sd.0.vb
  • %TEMP%\whatdafock.txt
  • %TEMP%\nbojWyW.resources
  • %TEMP%\rh.resources
  • %TEMP%\176bdlez.exe
  • %TEMP%\RES4.tmp
  • %TEMP%\RES2.tmp
  • %TEMP%\176bdlez.out
  • %TEMP%\176bdlez.cmdline
  • %TEMP%\176bdlez.0.vb
  • %TEMP%\MSNPSharp.dll
  • %TEMP%\fxP8y.resources
  • <LS_APPDATA>\Start\update.exe
  • %TEMP%\svchost.exe
  • %TEMP%\update.exe
  • %TEMP%\vbc1.tmp
  • %TEMP%\windowsupdate.ico
Deletes the following files:
  • %TEMP%\RES2.tmp
  • %TEMP%\vbc1.tmp
  • %TEMP%\176bdlez.out
  • %TEMP%\176bdlez.cmdline
  • %TEMP%\176bdlez.0.vb
  • %TEMP%\176bdlez.exe
  • %TEMP%\RES4.tmp
  • %TEMP%\vbc3.tmp
  • %TEMP%\pnva37sd.0.vb
  • %TEMP%\pnva37sd.cmdline
  • %TEMP%\pnva37sd.out
  • %TEMP%\rh.resources
  • %TEMP%\nbojWyW.resources
  • <LS_APPDATA>\Start\update_backup.exe
  • %TEMP%\windowsupdate.ico
  • <LS_APPDATA>\Start\update.exe
Network activity:
Connects to:
  • '17#.#3.169.14':80
Miscellaneous:
Creates and executes the following:
  • '%TEMP%\update.exe'
  • '%TEMP%\svchost.exe'
Executes the following:
  • '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\176bdlez.cmdline"
  • '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
  • '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\pnva37sd.cmdline"
  • '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
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